﻿<!DOCTYPE html> 
<html>
<head>
    <meta charset="utf-8" />
    <title>块元素和行内元素</title>
</head>
<body>
    <div>
        <h3>绿叶学习网</h3>
        <p>“绿叶,给你初恋般的感觉。”</p>
        <strong>绿叶学习网</strong>
        <em>“绿叶,给你初恋般的感觉。”</em>
    </div>
</body>
</html>
